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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Feature flags, all 2,081.

GrowthBook gates the client evaluates on startup. Most of what ships is behind one of these before it is announced.

Feature flags2,081seen across 149 builds
In v2.1.308889the newest inventory on disk
Gone314in an earlier build, not in the newest
Described0have a line in Anthropic's documentation
No docs line2,081no line in the documentation we hold

Every feature flag, and where it lived

181 of 2,081 feature flags One tick per build on this box, oldest on the left. A gap is a build the feature flag was not in.

A is the one account this site reads, N the anonymous baseline, D what the release compiled in. 1,143 of 2,081 gates have been read at all: a run only records the gates its own release wrote about. Claude Code evaluates its gates on Anthropic's servers, so a reading of off can be a rollout this account sits outside of, and none of it says anything about your install. How to read these.

○ not in v2.1.308, ◇ we found no documentation describing it.

Feature flagWhat it doesSpan v2.1.138 → v2.1.308 Status Reading
tengu_mossy_gray ◇ A limit set at 2000 for every provider can now be removed by a server-side switch when Claude Code runs interactivelyv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_mossy_thrush ◇ When a further server-side switch is on, the changed-file check can judge files through an outputs link and count each outcomev2.1.300 → v2.1.308 ◆in the build AND v2.1.300 tengu_moth_lantern ◇ Default false. When on and CLAUDE_MEMORY_STORES is unset or blank, a saved org memory store selection for the current account (orgMemorySelection) is sent when Claude Code requests the org memory credential, and cached store-picker data is returned alongside the org memory mounts. When off, a saved selection is sent only if it is public_projects.v2.1.213 → v2.1.217 ○gone AND v2.1.213 tengu_nankeen_kestrel ◇ Windows sandbox TLS interception could use a persistent managed certificate authority, but that path is disabled here.v2.1.212 → v2.1.308 ◆in the build AND v2.1.221 tengu_neapolitan ◇ The checks deciding whether subagents are offered remote isolation gained two new conditions at the frontv2.1.178 → v2.1.308 ◆in the build AND v2.1.288 tengu_orderly_lantern ◇ WebFetch URL approval prompts now remember approved addresses and can retry without asking, and a switch can make them appear one at a timev2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_osier_pylon_trace ◇ Claude could read console errors and failed loads from real viewers of an artifact, but it's switched off.v2.1.238 → v2.1.308 ◆in the build AND v2.1.280 tengu_paper_halyard ◇ Internal rewrite of how instruction files get filtered from context, no visible change.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.252 tengu_patient_meteor ◇ When a subagent edits a file, the Edit tool can attach a compact summary result, off unless switched on remotelyv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_peaceful_leaf ◇ A remote switch can add guidance on files and folders on your computer to the browser and computer-use tool descriptionsv2.1.288 → v2.1.308 ◆in the build AND v2.1.299 tengu_plugin_hooks_modules ◇ Tools a plugin registers reach the model through a local loopback MCP server.v2.1.242 → v2.1.308 ◆in the build AND v2.1.283 tengu_plugins_npm_marketplace ◇ Plugins can now be installed directly from the npm registryv2.1.275 → v2.1.308 ◆in the build AND v2.1.275 tengu_polished_reef ◇ Remote SDK sessions can prepare attached files while still waiting to take over a turn, behind a switch that is off by defaultv2.1.282 → v2.1.286 ○gone AND v2.1.286 tengu_pr_footer_surface_suffix ◇ Default false. When true, the default PR attribution footer Generated with Claude Code gets via <surface> appended, with the surface named from CLAUDE_CODE_ENTRYPOINT: Claude Desktop, Mobile, Cowork, Claude Tag in Slack, Claude Tag in Teams or GitHub Actions. Other entrypoints get no suffix, and an attribution.pr setting still replaces the default footer.v2.1.211 → v2.1.308 ◆in the build AND v2.1.211 tengu_projects_thread_recap ◇ A richer "recap" format for project task status is being built, gated off by defaultv2.1.265 → v2.1.308 ◆in the build AND v2.1.265 tengu_projects_thread_reply_lead_killswitch ◇ Claude Code Projects threads can now label replies as sent directly, relayed, or from the project timelinev2.1.274 → v2.1.308 ◆in the build AND v2.1.274 tengu_propose_goal ◇ A tool letting Claude propose a session goal you approve with one keypress is present but gated off.v2.1.227 → v2.1.308 ◆in the build AND v2.1.227 tengu_proud_clover ◇ A new "max effort" mode appears with a footer hint pointing to the /effort commandv2.1.280 → v2.1.308 ◆in the build AND v2.1.292 tengu_quiet_heron ◇ Continuing a server-side conversation thread can now skip resending the system prompt and tools list, with a fallback if the server disagreesv2.1.269 → v2.1.308 ◆in the build AND v2.1.269 tengu_quill_marten ◇ Claude Code can fetch context for a claude.ai Project into the session, behind a switch that is off unless turned on remotelyv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_quirky_sketch ◇ Claude Code can now single out its device tools for special handling, under a server flag that is off unless switched onnever mined ·never mined AND v2.1.290 tengu_quizzical_giraffe ◇ A remotely controlled switch can stop Claude Code from fetching managed settings early at startup, and a message covers approvals it cannot ask forv2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_reactive_quilt ◇ Cloud sessions gain a way to hand answered file writes to the next worker and place them in the home folder, off unless switched on remotelyv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_record_created_pr_to_ccr ◇ Pull requests you create could be reported to a cloud endpoint, but nothing is sent here.v2.1.234 → v2.1.308 ◆in the build AND v2.1.234 tengu_recursive_lobster ◇ Claude Code registers a new remote switch whose purpose is not yet visiblev2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_remote_backend ◇ Joining an existing cloud session, trusted-device enrollment and the folder sync offer can now be turned on by two new remote switches, off by defaultv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.305 tengu_rosy_finch ◇ An MCP tool call's timeout can now pause while it waits on a question to you, but only if this is switched on remotelyv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_russet_linnet ◇ Default false. When on, the Skill tool's prompt uses the shorter Invoke a skill. text in place of the default Execute a skill within the main conversation text. Setting CLAUDE_CODE_SKILL_DESC_REFRAME to true turns this on regardless of the flag.v2.1.196 → v2.1.215 ○gone AND v2.1.196 tengu_rustling_crescent ◇ Claude Code can list the subagents that ran earlier in a session, off unless CLAUDE_CODE_SUBAGENT_HISTORY is set or it is switched on remotelyv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_saffron_ladder ◇ The remote setting behind the Fable upgrade offer now only turns a fixed "Upgrade to Max" option on or off, with no custom textv2.1.216 → v2.1.308 ◆in the build AND v2.1.282 tengu_saffron_picker_dim ◇ Default false. When on, and the cached extra-usage disabled reason is org_level_disabled or overage_not_provisioned (along with further account checks), model picker options whose value is a Fable model are shown disabled with the label Fable (disabled), and their description can gain a requires usage credits note.v2.1.190 → v2.1.308 ◆in the build AND v2.1.190 tengu_send_file ◇ Sending files between sessions now fails with a clear "not available in this session" message.v2.1.227 → v2.1.308 ◆in the build AND v2.1.290 tengu_sequential_cloud ◇ Claude Code can ping Anthropic's servers to keep a one-hour prompt cache alive during idle pauses, but it is off unless switched on remotelyv2.1.286 → v2.1.308 ◆in the build AND v2.1.286 tengu_shimmering_firefly ◇ New instructions teach a status classifier that a message opening with a request means work is blocked, behind a switch that defaults offv2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_shiny_stardust ◇ A gated code path can now make certain search-matched MCP tools load eagerly instead of staying deferredv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_slate_harbor ◇ REPL contexts moved to a registry that releases timers even on error paths.v2.1.138 or earlier → v2.1.274 ○gone AND v2.1.248 tengu_slate_marten ◇ Claude Code now reports whether early attachment preparation was off, on, or on including PDFs, controlled by two switches off by defaultv2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_slate_quoin ◇ Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.v2.1.239 → v2.1.267 ○gone AND v2.1.239 tengu_sleepy_rabbit ◇ The plan and auto mode check now also looks at the mode that was active before a rewrite, and a line-reading helper sits behind a server switchv2.1.285 → v2.1.308 ◆in the build AND v2.1.285 tengu_smooth_harbor ◇ A server flag can widen when subagent requests send the extended usage-limit header.v2.1.246 → v2.1.308 ◆in the build AND v2.1.292 tengu_snappy_plum ◇ A new way to pass MCP server metadata to plugins was added; it stays off unless switched on remotelyv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_sorrel_trellis_gusset ◇ Claude Code has a new remotely controlled switch, off unless turned on, with a check for an "arbiter" permission mode beside itv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_sorted_otter ◇ The dialog for MCP servers that ask you to sign in again with extra permissions now falls back to on when the server sends no settingv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_sorted_zebra ◇ Behind a switch that is off by default, auto mode registers tools reached through toolAliases or warns when an allow rule would skip its checkv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_spicy_blossom ◇ Running plugin install --replace without a name@marketplace id now says that id is needed and that nothing was installedv2.1.287 → v2.1.308 ◆in the build AND v2.1.287 tengu_splendid_sutton ◇ A new internal check decides when Claude Code sends extra gateway hint headers on first-party requestsv2.1.273 → v2.1.308 ◆in the build AND v2.1.283 tengu_steady_finch ◇ A recently added server-controlled switch was swapped for a new one that falls back to off; what it controls is still unknownnever mined ·never mined AND v2.1.305 tengu_steady_mitten ◇ Enterprise organizations can be shown an in-app survey, off unless switched on remotely and skipped with CLAUDE_CODE_DISABLE_FEEDBACK_SURVEYv2.1.304 → v2.1.308 ◆in the build AND v2.1.304 tengu_steady_puppy ◇ Claude Code can now prepare background agents orphaned by a restart so they can be resumed, and the restart notice says which onesv2.1.304 → v2.1.308 ◆in the build AND v2.1.304 tengu_swift_whistle ◇ Subagent report truncation accounting for a 'harness tail' section stays inert behind a flag.v2.1.261 → v2.1.308 ◆in the build AND v2.1.261 tengu_swirling_squid ◇ Artifact settings reports now include inherited_type_grant when an environment variable or the tengu_swirling_squid flag turns it onv2.1.281 → v2.1.308 ◆in the build AND v2.1.281 tengu_temporal_hare ◇ Claude Code has a new check for a slimmed-down prompt variant, off unless it is switched on remotelyv2.1.301 → v2.1.308 ◆in the build AND v2.1.301 tengu_terminal_sidebar ◇ Session status in your terminal tab needs a server gate as well as the setting.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.301 tengu_tidy_frost ◇ Subscribers who get the 1-hour prompt cache can be moved to a 5-minute cache for certain models when a server-side switch is onv2.1.293 → v2.1.308 ◆in the build AND v2.1.293 tengu_tidy_origami ◇ Claude Code reads a new remote switch whose purpose is not known, and treats it as off when the server sends nothingv2.1.286 → v2.1.308 ◆in the build AND v2.1.286 tengu_tips_mod ◇ The spinner tip line shown while Claude works was rebuilt as an internal 'tips' pluginnever mined ·never mined AND v2.1.273 tengu_tools_exclusion_killswitch ◇ Tool presets can now exclude specific tools with a '!ToolName' syntaxv2.1.273 → v2.1.308 ◆in the build AND v2.1.273 tengu_tranquil_starlight ◇ The long Claude in Chrome guidance on GIFs, console logs, alerts and tabs is gone from its old place, and tool search now mentions a batch browser toolv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_transcript_local_gc ◇ CLAUDE_CODE_TRANSCRIPT_LOCAL_GC, which turns on local transcript clean-up, is now accepted from managed policy settingsv2.1.217 → v2.1.308 ◆in the build AND v2.1.287 tengu_twinkling_boole ◇ Claude now warns when dispatching multiple write-capable agents into the same working directoryv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_twinkling_hoare ◇ An internal check that used to be looked up on the fly is now a plain remote switch that falls back to offv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_twinkly_beacon ◇ Behind a switch that is off by default, PDFs with a known page count can be attached as a reference, noting whether they are small enough to read wholev2.1.290 → v2.1.296 ○gone AND v2.1.290 tengu_valiant_crayon ◇ Whether a permission prompt hides its "always allow" choice now also depends on a server-controlled settingv2.1.300 → v2.1.308 ◆in the build AND v2.1.300 tengu_valiant_finch ◇ Claude Code now checks a new remotely controlled switch that is off by default, and it is not yet clear what it controlsv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_velvet_moon ◇ Claude Code can tell the model the user pays per token and what a Bash call costs, but both notes fall back to offv2.1.290 → v2.1.295 ○gone AND v2.1.290 tengu_velvety_sprout ◇ The Agent tool can now keep tool results inside subagents instead of stripping them, controlled by a server-side switchv2.1.281 → v2.1.308 ◆in the build AND v2.1.301 tengu_violin_arching ◇ A new, switched-off check tells shell commands that only name app identifiers apart from ones that name settings filesv2.1.293 → v2.1.308 ◆in the build AND v2.1.293 tengu_violin_endpin ◇ Behind a setting that is off by default, Claude Code checks its settings files before and after a shell command and tells Claude which ones changedv2.1.293 → v2.1.308 ◆in the build AND v2.1.293 tengu_violin_mute ◇ Scaffolding to mute and unmute served tools has landed, with state labels and a periodic timer, but nothing calls it.v2.1.257 → v2.1.308 ◆in the build AND v2.1.281 tengu_violin_volute ◇ When the machine running a cloud session's tools disconnects, Claude Code can now reconnect the session to this device instead of ending itnever mined ·never mined AND v2.1.287 tengu_violin_willow ◇ Two new server-controlled switches, both off by default, have been built in without showing what feature they controlv2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_virtual_knuth ◇ Hook-approved tool calls could still be checked by the auto-mode classifier, but the flag is off.v2.1.246 → v2.1.308 ◆in the build AND v2.1.292 tengu_virtual_pancake ◇ New system-prompt note warns Claude that pasted content may carry instructions the user didn't writev2.1.274 → v2.1.308 ◆in the build AND v2.1.274 tengu_vivid_crown ◇ The reminder Claude Code sends the model in auto mode gains a setting about finishing work, off unless switched on remotelyv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_walnut_sconce ◇ An alternate PR-review description exists but you'll always see the original one.v2.1.218 → v2.1.267 ○gone AND v2.1.221 tengu_walnut_tiller ◇ MCP tools that declare file inputs can now take local file paths, which Claude Code uploads and replaces with referencesv2.1.296 → v2.1.308 ◆in the build AND v2.1.296 tengu_wiggly_dove ◇ A new x-claude-code-wiggly-dove request header can carry client version, permission mode, sandbox and git details, and is off by defaultv2.1.296 → v2.1.308 ◆in the build AND v2.1.296 tengu_wise_kite ◇ Claude Code has a new feature switch that is controlled from Anthropic's servers and falls back to offv2.1.287 → v2.1.308 ◆in the build AND v2.1.287 tengu_worker_owner_rows_killswitch ◇ Spawned background agents can now be given a relayed summary of the project owner's recent 'timeline' postsv2.1.267 → v2.1.308 ◆in the build AND v2.1.267 tengu_zesty_pearl ◇ On WSL, deny, ask and edit permission rules can also be checked against the other mount spelling of a path, when a switch is onv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_zippy_spindle ◇ New unreleased mechanism lets a fresh prompt abort a running turn early to run soonerv2.1.271 → v2.1.308 ◆in the build AND v2.1.271
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